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Re: XPS M1530 Display Issue

If the external monitor works, but the internal does not, it could be a backlight problem (or an inverter problem, if you have a CCFL backlight).

It could also be a symptom of a dying video chip - for which these nVidia engineering marvels are known.  Yes, it does happen sometimes that the external display will be OK when the internal one is not.

 

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